package com.ht.common.core.utils;

import java.lang.management.ManagementFactory;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

import com.ht.common.core.exception.ServiceException;
import org.apache.commons.lang3.time.DateFormatUtils;
import org.springframework.boot.SpringApplication;

/**
 * 时间工具类
 * 
 * @author ruoyi
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils
{
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
    
    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM", 
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"
            ,"yyyy-MM-dd HH:mm:ss.SSS"};

    /**
     * 获取当前Date型日期
     * 
     * @return Date() 当前日期
     */
    public static Date getNowDate()
    {
        return new Date();
    }
    /**
     * 获取当前小时数
     * @return
     */
    public static int getCurrHours()
    {
    	LocalDateTime now = LocalDateTime.now();
    	return now.getHour();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     * 
     * @return String
     */
    public static String getDate()
    {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime()
    {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow()
    {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format)
    {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date)
    {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date)
    {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts)
    {
        try
        {
            return new SimpleDateFormat(format).parse(ts);
        }
        catch (ParseException e)
        {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str)
    {
        if (str == null)
        {
            return null;
        }
        try
        {
            return parseDate(str.toString(), parsePatterns);
        }
        catch (ParseException e)
        {
            return null;
        }
    }
    
    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate()
    {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate)
    {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }
    
	 //计算两个时间相差的分钟
    public static long getTimeDifferMunite(Date startTime, Date endTime){
        long eTime = endTime.getTime();
        long sTime = startTime.getTime();
        long diff = (eTime - sTime) / (1000*60);
        return diff;
    }
    //计算两个时间相差的天数
    public static long getTimeDifferDay(Date startTime, Date endTime){
    	long eTime = endTime.getTime();
    	long sTime = startTime.getTime();
    	long diff = (eTime - sTime) /(1000*3600*24);
    	return diff;
    }
    
    /**
     * 获得给定几秒之前的时间 yyyy-MM-dd HH:mm:ss
     * @param date
     * @param parSdf
     * @param second
     * @return
     */
    public static String beforTimeBySeond(Date date,int second) {
    	SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    	if(date==null) {
    		return sdf.format(new Date());
    	}
	   	 long millionSeconds = date.getTime();//毫秒
	   	 long newTime=millionSeconds-(1000*second);
	   	 Calendar c = Calendar.getInstance();
	   	 c.setTimeInMillis(newTime); 
   	 return sdf.format(c.getTime());
    }
    /**
     * 获取当前年份
     * @return
     */
    public static String getCurFullYear() {
    	DateFormat df = new SimpleDateFormat("yyyy");// 多态
    	String format = df.format(new Date());
    	return format;
    }
    /**
     *获取过去年份 
     * @param passYear
     * @return
     */
    public static String getFullYear(int passYear) {
    	DateFormat df = new SimpleDateFormat("yyyy");// 多态
    	Date date = new Date();
    	Calendar calendar = Calendar.getInstance();
    	calendar.setTime(date);
    	calendar.add(Calendar.YEAR, passYear);
    	date = (Date) calendar.getTime();
    	String format = df.format(date);
    	return format;
    }
    
    public static String yesterday() {
    	DateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 多态
    	Date date = new Date();
    	Calendar calendar = Calendar.getInstance();
    	calendar.setTime(date);
    	calendar.add(Calendar.DAY_OF_MONTH, -1);
    	date = (Date) calendar.getTime();
    	String format = df.format(date);
    	return format;
    }
    /**
     * 获取多少天前的日期，返回 yyyy-MM-dd
     * @param day
     * @return
     */
    public static String beforTimeByDay(int day) {
    	DateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 多态
    	Date date = new Date();
    	Calendar calendar = Calendar.getInstance();
    	calendar.setTime(date);
    	calendar.add(Calendar.DAY_OF_MONTH, -day);
    	date = (Date) calendar.getTime();
    	String format = df.format(date);
    	return format;
    }
    
    
    public static String beforDateByMounth(int mounth) {
    	DateFormat df = new SimpleDateFormat("yyyy-MM-dd");// 多态
    	Date date = new Date();
    	Calendar calendar = Calendar.getInstance();
    	calendar.setTime(date);
    	calendar.add(Calendar.MONTH, -mounth);
    	date = (Date) calendar.getTime();
    	String format = df.format(date);
    	return format;
    }
    /**
     * 获取日期相对月份偏移，负数往前偏移，正数是往后偏移
     * @param mounth
     * @return
     */
    public static Date getDateByOffSetMounth(int mounth) {
    	Date date = new Date();
    	Calendar calendar = Calendar.getInstance();
    	calendar.setTime(date);
    	calendar.add(Calendar.MONTH, mounth);
    	date = (Date) calendar.getTime();
    	return date;
    }
    public static Date getDateByOffSetDay(int day) {
    	Date date = new Date();
    	Calendar calendar = Calendar.getInstance();
    	calendar.setTime(date);
    	calendar.add(Calendar.DAY_OF_MONTH, day);
    	date = (Date) calendar.getTime();
    	return date;
    }

    /**
     * 时间(分钟)限制
     * @param startTime
     * @param limitMunite
     */
    public static void timeoutCheckByMunit(Date startTime,Integer limitMunite){
        long jgtime=getTimeDifferMunite(startTime, new Date());
        if(jgtime<limitMunite){
            throw new ServiceException("当前间隔时间少于{}分钟，请稍后重试。",limitMunite);
        }
    }
    
 
    public static void main(String[] args) {
		System.out.println(getCurFullYear());
		System.out.println(getFullYear(-2));
		System.out.println(getFullYear(-1));
		System.out.println(getFullYear(-0));
		System.out.println(getFullYear(0));
		System.out.println(getFullYear(1));
		System.out.println(getFullYear(2));
	}
}
